from datetime import datetime, timedelta
from modules.database import col_users, col_albums, col_photos, col_emails, col_videos, col_emails
from modules.app import app
from modules.utils import configGet, logWrite
from modules.scheduler import scheduler
from modules.mailer import mail_sender

from uuid import uuid1
from fastapi import Depends, HTTPException, Form
from fastapi.responses import Response, UJSONResponse
from starlette.status import HTTP_204_NO_CONTENT, HTTP_400_BAD_REQUEST, HTTP_406_NOT_ACCEPTABLE

from modules.security import (
    User,
    get_current_active_user,
    get_password_hash,
    get_user,
    verify_password
)


async def send_confirmation(user: str, email: str):
    confirmation_code = str(uuid1())
    try:
        mail_sender.sendmail(
            from_addr=configGet("sender", "mailer", "smtp"),
            to_addrs=email,
            msg=f'From: {configGet("sender", "mailer", "smtp")}\nSubject: Email confirmation\n\n'+configGet("message", "mailer", "messages", "registration_confirmation").format(configGet("external_address")+f"/users/{user}/confirm?code={confirmation_code}")
        )
        col_emails.insert_one( {"user": user, "email": email, "used": False, "code": confirmation_code} )
        logWrite(f"Sent confirmation email to '{email}' with code {confirmation_code}")
    except Exception as exp:
        logWrite(f"Could not send confirmation email to '{email}' due to: {exp}")


@app.get("/users/me/", response_model=User)
async def user_me(current_user: User = Depends(get_current_active_user)):
    return current_user


if configGet("registration_requires_confirmation") is True:
    @app.get("/users/{user}/confirm")
    @app.patch("/users/{user}/confirm")
    async def user_confirm(user: str, code: str):
        confirm_record = col_emails.find_one( {"user": user, "code": code, "used": False} )
        if confirm_record is None:
            return HTTPException(HTTP_400_BAD_REQUEST, detail=configGet("email_code_invalid", "messages"))
        col_emails.find_one_and_update( {"_id": confirm_record["_id"]}, {"$set": {"used": True}} )
        col_users.find_one_and_update( {"user": confirm_record["user"]}, {"$set": {"disabled": False}} )
        return UJSONResponse( {"detail": configGet("email_confirmed", "messages")} )

if configGet("registration_enabled") is True:
    @app.post("/users")
    async def user_create(user: str = Form(), email: str = Form(), password: str = Form()):
        if col_users.find_one( {"user": user} ) is not None:
            return HTTPException(HTTP_406_NOT_ACCEPTABLE, detail=configGet("user_already_exists", "messages"))
        col_users.insert_one( {"user": user, "email": email, "hash": get_password_hash(password), "disabled": configGet("registration_requires_confirmation")} )
        if configGet("registration_requires_confirmation") is True:
            scheduler.add_job( send_confirmation, trigger="date", run_date=datetime.now()+timedelta(seconds=1), kwargs={"user": user, "email": email} )
        return Response(status_code=HTTP_204_NO_CONTENT)


@app.delete("/users/me/")
async def user_delete(password: str = Form(), current_user: User = Depends(get_current_active_user)):
    user = get_user(current_user.user)
    if not user:
        return False
    if not verify_password(password, user.hash):
        return HTTPException(HTTP_400_BAD_REQUEST, detail=configGet("credentials_invalid", "messages"))
    col_users.delete_many( {"user": current_user.user} )
    col_emails.delete_many( {"user": current_user.user} )
    col_photos.delete_many( {"user": current_user.user} )
    col_videos.delete_many( {"user": current_user.user} )
    col_albums.delete_many( {"user": current_user.user} )
    return Response(status_code=HTTP_204_NO_CONTENT)